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Floor Slope Effects on Lifting Kinematics and Kinetics.

PB2005100143

Publication Date	2004
Personal Author	Reiser, R. F.
Page Count	48
Abstract	The specific aim of the first study was to determine sub-maximal lifting capacities while lifting a box from an inclined surface (facing both up and down a 10 and 20 slope and the level) to knuckle height. The task was constructed such that both the person and box were on the inclined surface. The specific aim of the second study was to examine the low-back forces when lifting from a sloped floor surface. Based on lifting capacity and low-back force estimates, the results suggest that floor slope does not affect risk for injury when lifting from the floor to knuckle height. However, when spinal curvature and lift distance (work) are factored in, there may be an increased risk for injuries in the downhill conditions. Additionally, horizontal foot distance to the box is increased in the up hill lifting conditions , possibly increasing risk for injury in a different manner relative to the downhill slope. In conclusion, care should be taken in both downhill and uphill sloped lifting conditions to minimize the potential for low-back pain and injury.
Keywords	Floors Slope Occupational safety and health Lifting Kinetics Kinematics Inclination Hoisting Spinal curvatures Low back pain Injuries Risk assessment Muscles Low back forces Sub-maximal lifting capacities Sagital plane kinematics Spinae muscle activity
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	Colorado State Univ., Fort Collins.; National Inst. for Occupational Safety and Health, Washington, DC.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Washington, DC.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	200501

Floor Slope Effects on Lifting Kinematics and Kinetics.

Floor Slope Effects on Lifting Kinematics and Kinetics.
PB2005100143

Publication Date	2004
Personal Author	Reiser, R. F.
Page Count	48
Abstract	The specific aim of the first study was to determine sub-maximal lifting capacities while lifting a box from an inclined surface (facing both up and down a 10 and 20 slope and the level) to knuckle height. The task was constructed such that both the person and box were on the inclined surface. The specific aim of the second study was to examine the low-back forces when lifting from a sloped floor surface. Based on lifting capacity and low-back force estimates, the results suggest that floor slope does not affect risk for injury when lifting from the floor to knuckle height. However, when spinal curvature and lift distance (work) are factored in, there may be an increased risk for injuries in the downhill conditions. Additionally, horizontal foot distance to the box is increased in the up hill lifting conditions , possibly increasing risk for injury in a different manner relative to the downhill slope. In conclusion, care should be taken in both downhill and uphill sloped lifting conditions to minimize the potential for low-back pain and injury.
Keywords	Floors Slope Occupational safety and health Lifting Kinetics Kinematics Inclination Hoisting Spinal curvatures Low back pain Injuries Risk assessment Muscles Low back forces Sub-maximal lifting capacities Sagital plane kinematics Spinae muscle activity
Source Agency	National Institute for Occupational Safety and Health
Corporate Authors	Colorado State Univ., Fort Collins.; National Inst. for Occupational Safety and Health, Washington, DC.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Washington, DC.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	200501